:root {
  --fg: #111;
  --muted: #666;
  --border: #000;
  --border-soft: #ccc;
  --bg-soft: #f2f2f2;
}

body {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9rem;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: var(--fg);
  background: #fff;
}
body.wide { max-width: 1400px; }

h1, h2 {
  font-family: -apple-system, sans-serif;
  letter-spacing: -0.01em;
}

nav {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.75rem;
}
nav a {
  margin-right: 1.25rem;
  text-decoration: none;
  color: var(--fg);
}
nav a.active {
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
nav .spacer { flex: 1; }
.nav-group { display: inline-flex; align-items: center; gap: 0.4rem; margin-right: 1.25rem; }
.nav-group a { margin-right: 0; }

table { border-collapse: collapse; width: 100%; }
th {
  text-align: left;
  padding: 0.5rem;
  border-bottom: 2px solid var(--border);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
.table-scroll { overflow-x: auto; }

textarea { width: 100%; font-family: inherit; font-size: 0.85rem; box-sizing: border-box; border: 1px solid var(--border); }

input[type=checkbox] { width: 1.1rem; height: 1.1rem; }

input[type=text], input[type=email], select {
  font: inherit;
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: #fff;
  color: var(--fg);
}

.muted { color: var(--muted); font-size: 0.85rem; }
.error { color: #b91c1c; background: #fdeaea; border: 1px solid #b91c1c; padding: 0.5rem 0.75rem; margin-bottom: 1rem; }
.pill { display: inline-block; padding: 0.05rem 0.45rem; border: 1px solid var(--border); font-size: 0.7rem; text-transform: uppercase; }
.pill.count { background: var(--border); color: #fff; border-radius: 999px; text-transform: none; font-size: 0.75rem; }

.card {
  border: 1px solid var(--border);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-block;
  cursor: pointer;
  font: inherit;
  padding: 0.4rem 0.85rem;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--fg);
}
.btn:hover { background: var(--bg-soft); }
.btn:focus-visible { outline: 2px solid var(--fg); outline-offset: 1px; }

.btn-primary { background: var(--fg); border-color: var(--fg); color: #fff; }
.btn-primary:hover { background: #333; }

.btn-danger { background: #fff; border-color: #b91c1c; color: #b91c1c; }
.btn-danger:hover { background: #fdeaea; }

.btn-secondary { background: #fff; }

.page-narrow { max-width: 440px; margin: 3rem auto; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.page-header h1 { margin-bottom: 0; }

.center { text-align: center; }

dialog.modal {
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1.5rem;
  width: 90%;
  max-width: 480px;
}
dialog.modal::backdrop { background: rgba(0, 0, 0, 0.5); }

.perm-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-soft);
}
.perm-row:last-of-type { border-bottom: none; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-soft);
}
.modal-actions.split { justify-content: space-between; }
.modal-actions-right { display: flex; gap: 0.5rem; }

.editor-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}
.editor-split textarea { height: 65vh; margin: 0; }

.preview-pane {
  height: 65vh;
  box-sizing: border-box;
  overflow-y: auto;
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  font-family: -apple-system, sans-serif;
}
.preview-pane h1, .preview-pane h2, .preview-pane h3 { margin-top: 0.25rem; }
.preview-pane table { margin: 0.5rem 0; }
.preview-pane pre {
  background: var(--bg-soft);
  padding: 0.5rem;
  overflow-x: auto;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (max-width: 800px) {
  .editor-split { grid-template-columns: 1fr; }
}

.diff-table { table-layout: fixed; }
.diff-table td {
  width: 50%;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
  vertical-align: top;
  padding: 0.15rem 0.5rem;
  border-bottom: none;
}
.diff-table td.diff-del { background: #fbdcdc; }
.diff-table td.diff-add { background: #d9f2d9; }